The Little Luggable uses a Raspberry Pi, so you can use any operating system compatible with this incredibly versatile device. Personally, I am currently using Ubuntu Resolute 26.04.
The Raspberry Pi 5 supports a rechargeable RTC battery which is crucial if you’re going to use it in a battery powered device like the Little Luggable.
In order to ensure the battery recharges, you’ll need to add the following to your config.txt:
dtparam=rtc_bbat_vchg=3000000